Intro to Backend: Is Browser The Only Place To Send HTTP Request?

Today, I begin to learn the second part of web develop course: backend.

Frontend is the stuff that we can see and interactive with, such as HTML, CSS, and JS. We can type our code, style our page, or write some function to make interaction. However, backend is everything else.

For example, we type Target web address in the Internet Browser.

As we hit "enter", there are a few steps to go through:

1. The HTTP request is sent to a particular server's IP address.
2. The server figures out what to send us
3. It sends a HTTP response back to us

Those process we are hard to see, and it happens in less than one second.

The instructor said that the browser is not the only place to send the HTTP request, and there are so many choices out there. In this learning course, we are going to use Postman App.

Postman allows us to make HTTP requests and viewer responses. It is really for developers to understand how things are working or debug something.

In the Postman App, we can choose different types of request.

The most important and frequent use of requests are:

1. Get: it is for retrieving information
2. Post: it is for posting new information to database such as sign up for a website
3. Put & Patch: it is for updating things or editing them
4. Delete: it is for deleting things

For now, these information are some basic concept to start with. As I continue to learn the course, I will share more study notes with you.

Comments

GIT Study Note: Six Git Commands You Should Know!

What is Git? According to Git website , Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency. Basically, we can use Git to track all of changes and revert them back if we made mistakes. The version control system is a way for us to work with different versions of our code, so that we can save different features and make notes as we progress. It is also very useful for team collaboration. Six Git Command You Should Know 1. Git Init In our server, we need to create a "Git" directory and inside of "Git", we make another direcory "git_inro". Then, we add a file "app,js" in the "git_intro" folder. The first thing we need to run is "git init" . When we run git init, it will make a directory which is hidden called ".git". Wherever I run that git init command, it's going to track all of our changes. ...

Intermediate Express.js: How To Render HTML From A EJS File?

The Express.js apps we have developed so far are just simply getting requests from users and sending matched message back to them. However, it is not what we want in the real web application. In most case, we want to send back a relevant web page when our app receives request from user. In order to do that, we need to npm install ejs file in the Express, create HTML page in the ejs file, and render HTMl from the ejs file. I know it sounds confuse now. I am going to explain more details in the example. EJS stands for embedded JavaScript. It lets us embed JavaScript code variables if statements loops inside of HTML. How to render HTML from a EJS file? Step One: Create a HTML page in EJS file Firstly, in our server, we create a folder named "EJSDemo". In this folder, we touch two files, one is "app.js", and the other one is "home.ejs". We are going to write a simple HTML code in the "home.ejs" file. The instructor create a dog page,...

Intro To Authentication: Three Useful Tools Will Make Everything Easier

Authentication is very important for both users and websites. It helps to keep users' information safe and also helps us to manage the accounts. Authentication is also complex because there is a lot of moving pieces that have to fit together in just the right way to make that work. The course introduce three tools to make authentication more quickly and safely. 1. Passport.js Passport.js will make our life easier and make our code shorter. It also helps to make implementation faster. Most importantly, it is used a lot in the real word. 2. Passport Local Passport Local is for username and password. It's about providing this entry point into all sorts of destinations. 3. Passport Local Mongoose This package will help us implement authentication with passport, and it's specially made to work with mongoose. We are also going to use these three tools into a Secret Page App project, which will show in next few posts.

Learn Bootcamp From Zero

Search This Blog